Evaluation of a novel circulation system for ureteroscopic laser lithotripsy in vitro.
World J Urol
; 42(1): 62, 2024 Jan 29.
Article
em En
| MEDLINE
| ID: mdl-38285266
ABSTRACT
PURPOSE:
To evaluate the cooling effect and other advantages of a novel circulation system for ureteroscopic holmium laser lithotripsy (URSL) in a standardized in vitro model. MATERIALS ANDMETHODS:
The novel circulation system was assembled by connecting a 4Fr ureteral catheter and a filter. Trails were divided into a new URSL group and a conventional URSL group. First, different power settings (18-30 W) of the holmium laser and irrigation flow rates (20-50 mL/min) were used to evaluate the thermal effect on the lithotripsy site of all groups. Then, renal pelvic temperature and pressure were assessed during URSL at a power of 1.5 J/20 Hz and irrigation flow rates of (20-50 mL/min). Finally, the whole process of lithotripsy was performed at 1.5 J/20 Hz (operator duty cycle ODC 50%) with an irrigation flow rate of 30 mL/min. The time required for lithotripsy, visual field clarity, and stone migration were observed.RESULTS:
Temperature of the lithotripsy point was significantly lower in the new URSL group than in the conventional group (P < 0.05) with irrigation rates (20, 30 mL/min). The renal pelvic pressure of the new group was significantly lower than that of the conventional group in which intrarenal hypertension developed at an irrigation rate of 50 ml/min. The new group had better visual clarity and lesser stone upward migration when lithotripsy was performed at 1.5 J/20 Hz and 30 ml/min.CONCLUSION:
The novel circulation system is more effective in reducing the thermal effects of URSL, pelvic pressure, stone upward migration, and improving the visual clarity of the operative field.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Litotripsia
/
Litotripsia a Laser
/
Hipertensão
Limite:
Humans
Idioma:
En
Revista:
World J Urol
Ano de publicação:
2024
Tipo de documento:
Article